Apparatus, circuit and method for controlling service access in packet data communication system

ABSTRACT

An apparatus, circuit, and method for controlling a service access in a packet data communication system are provided. The method includes broadcasting information related to whether a service access to a specific service is possible.

PRIORITY

This application is a continuation application of prior application Ser.No. 16/824,148, filed on Mar. 19, 2020, which is a continuationapplication of prior application Ser. No. 14/107,431, filed on Dec. 16,2013, which has issued as U.S. Pat. No. 10,887,730 on Jan. 5, 2021 andis based on and claims priority under 35 U.S.C. § 119(a) of a Koreanpatent application number 10-2013-0017544, filed on Feb. 19, 2013, inthe Korean Intellectual Property Office, the disclosure of which isincorporated by reference herein in its entirety.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present invention relates to an apparatus, circuit, and method forcontrolling a service access in a packet data communication system. Moreparticularly, the present invention relates to the apparatus, circuit,and method for controlling a service access using at least one of aservice type and a service priority.

2. Description of the Related Art

A mobile communication system has evolved to provide various high-speedlarge-capacity services to User Equipments (UEs). Examples of the mobilecommunication system include a High Speed Downlink Packet Access (HSDPA)mobile communication system, a High Speed Uplink Packet Access (HSUPA)mobile communication system, a Long-Term Evolution (LTE) mobilecommunication system, an LTE-Advanced (LTE-A) mobile communicationsystem, a High Rate Packet Data (HRPD) mobile communication systemproposed in a 3rd Generation Project Partnership 2 (3GPP2), and anInstitute of Electrical and Electronics Engineers (IEEE) 802.16m mobilecommunication system.

The LTE mobile communication system has been developed to effectivelysupport a high-speed radio packet data transmission, and maximizes athroughput of a cellular radio communication system using various RadioAccess (RA) schemes. The LTE-A mobile communication system enhances theLTE mobile communication system, and has an enhanced transmissioncapability compared with the LTE mobile communication system.

The LTE mobile communication system only supports packet data callsexcept for voice calls which have been supported in mobile communicationsystems of the related art, so, in the LTE mobile communication system,various schemes for supporting the voice calls have been developed.Typical examples of the various schemes for supporting the voice callsare a Packet Service Voice Call (PS Voice Call) scheme, a Voice over IP(VoIP) scheme, a Voice over LTE (VoLTE) scheme, a Single Radio VoiceCall Continuity (SRVCC) scheme, etc. Each of the PS Voice Call scheme,the VoIP scheme, and the VoLTE scheme is a scheme in which a voice callis converted into packet data, and the converted packet data istransmitted. The SRVCC scheme is a scheme in which a voice call may beconverted into packet data, and the converted packet data may betransmitted in a case that a UE has performed a Radio Access Technology(RAT) Inter-RAT Handover (I-RAT Handover) operation from a 3GPP networkto another network different from the 3GPP network.

In the LTE mobile communication system, another scheme for supporting avoice call service, such as a Circuit Service FallBack (CSFB) scheme forusing a voice call service used in a mobile communication system whichsupports each of a Packet Service (PS) and a Circuit Service (CS) suchas a Universal Mobile Telecommunication system (UMTS), has beenproposed. The CSFB scheme is a scheme in which a voice network of therelated art is used until networks consisting of only packet data arestably served.

In an LTE mobile communication system, an evolved Node B (eNB) controlsaccess to the eNB of UEs, and more specially controls the accesses tothe eNB of the UEs using an Access Barring parameter. The Access Barringparameter is transmitted through a System Information Block (SIB) Type 2(SIB Type2) message.

However, an access control scheme of a UE used in an LTE mobilecommunication system, i.e., a scheme in which an eNB controls a serviceaccess of the UE to the eNB using the Access Barring parameter, does notconsider a service type and a service priority of a service which the UEintends to receive. So, it can be difficult to provide a service with adesired service quality for the UE. Therefore, there is a need for aservice access control scheme for considering the service type and theservice priority of the service which the UE intends to receive.

The above information is presented as background information only toassist with an understanding of the present disclosure. No determinationhas been made, and no assertion is made, as to whether any of the abovemight be applicable as prior art with regard to the present invention.

SUMMARY OF THE INVENTION

Aspects of the present invention are to address at least theabove-mentioned problems and/or disadvantages and to provide at leastthe advantages described below. Accordingly, an aspect of the presentinvention is to propose an apparatus, circuit, and method forcontrolling a service access in a packet data communication system.

Another aspect of the present invention is to propose an apparatus,circuit, and method for controlling a service access by considering atleast one of a service type and a service priority in a packet datacommunication system.

Another aspect of the present invention is to propose an apparatus,circuit, and method for controlling a service access by considering aservice characteristic in a packet data communication system.

In accordance with an aspect of the present invention, a method forcontrolling a service access by an evolved Node B (eNB) in a packet datacommunication system is provided. The method includes broadcastinginformation related to whether a service access to a specific service ispossible.

In accordance with another aspect of the present invention, a method forcontrolling a service access by an eNB in a packet data communicationsystem is provided. The method includes broadcasting information relatedto whether a service access to a related service is possible byconsidering at least one of a service characteristic, a service type,and a service priority of each of services which the eNB may provide.

In accordance with yet another aspect of the present invention, a methodfor controlling a service access by a User Equipment (UE) in a packetdata communication system is provided. The method includes receivinginformation related to whether a service access to a specific service ispossible from an eNB.

In accordance with still another aspect of the present invention, amethod for controlling a service access by a UE in a packet datacommunication system is provided. The method includes receivinginformation related to whether a service access to a related service ispossible by considering at least one of a service characteristic, aservice type, and a service priority of each of services which an eNBmay provide.

In accordance with yet still another aspect of the present invention, aneNB in a packet data communication system is provided. The eNB includesa transmitter for broadcasting information related to whether a serviceaccess to a specific service is possible.

In accordance with still yet another aspect of the present invention, aneNB in a packet data communication system is provided. The eNB includesa transmitter for broadcasting information related to whether a serviceaccess to a related service is possible by considering at least one of aservice characteristic, a service type, and a service priority of eachof services which the eNB may provide.

In accordance with even yet another aspect of the present invention, aUE in a packet data communication system is provided. The UE includes areceiver for receiving information related to whether a service accessto a specific service is possible from an eNB.

In accordance with even still another aspect of the present invention, aUE in a packet data communication system is provided. The UE includes areceiver for receiving information related to whether a service accessto a related service is possible by considering at least one of aservice characteristic, a service type, and a service priority of eachof services which an eNB may provide.

Other aspects, advantages, and salient features of the invention willbecome apparent to those skilled in the art from the following detaileddescription, which, taken in conjunction with the annexed drawings,discloses exemplary embodiments of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other aspects, features, and advantages of certainexemplary embodiments of the present invention will be more apparentfrom the following description taken in conjunction with theaccompanying drawings, in which:

FIG. 1 illustrates a process for controlling a Packet Service (PS) VoiceCall access in a Long Term Evolution (LTE) mobile communication systemaccording to a first exemplary embodiment of the present invention;

FIG. 2 illustrates an operation process of an evolved Node B (eNB), suchas the eNB illustrated in FIG. 1, according to an exemplary embodimentof the present invention;

FIG. 3 illustrates an operation process of a User Equipment (UE), suchas the UE illustrated in FIG. 1, according to an exemplary embodiment ofthe present invention;

FIG. 4 illustrates a process for controlling a PS Voice Call access inan LTE mobile communication system according to a second exemplaryembodiment of the present invention;

FIG. 5 illustrates an operation process of an eNB, such as the eNBillustrated in FIG. 4, according to an exemplary embodiment of thepresent invention;

FIG. 6 illustrates an operation process of a UE, such as the UEillustrated in FIG. 4, according to an exemplary embodiment of thepresent invention;

FIG. 7 illustrates a process for controlling a PS Voice Call access inan LTE mobile communication system according to a third exemplaryembodiment of the present invention;

FIG. 8 illustrates an operation process of an eNB, such as the eNBillustrated in FIG. 7, according to an exemplary embodiment of thepresent invention;

FIG. 9 illustrates an operation process of a UE, such as the UEillustrated in FIG. 7, according to an exemplary embodiment of thepresent invention;

FIG. 10 illustrates a process for controlling a PS Voice Call access inan LTE mobile communication system according to a fourth exemplaryembodiment of the present invention;

FIG. 11 illustrates an operation process of an eNB, such as the eNBillustrated in FIG. 10, according to an exemplary embodiment of thepresent invention;

FIG. 12 illustrates an operation process of a UE, such as the UEillustrated in FIG. 10, according to an exemplary embodiment of thepresent invention;

FIG. 13 illustrates an internal structure of a UE in an LTEcommunication system according to an exemplary embodiment of the presentinvention; and

FIG. 14 illustrates an internal structure of an eNB in an LTEcommunication system according to an exemplary embodiment of the presentinvention.

Throughout the drawings, like reference numerals will be understood torefer to like parts, components, and structures.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS

The following description with reference to the accompanying drawings isprovided to assist in a comprehensive understanding of exemplaryembodiments of the invention as defined by the claims and theirequivalents. It includes various specific details to assist in thatunderstanding but these are to be regarded as merely exemplary.Accordingly, those of ordinary skilled in the art will recognize thatvarious changes and modifications of the embodiments described hereincan be made without departing from the scope and spirit of theinvention. In addition, descriptions of well-known functions andconstructions may be omitted for clarity and conciseness.

The terms and words used in the following description and claims are notlimited to the bibliographical meanings, but, are merely used by theinventor to enable a clear and consistent understanding of theinvention. Accordingly, it should be apparent to those skilled in theart that the following description of exemplary embodiments of thepresent invention is provided for illustration purpose only and not forthe purpose of limiting the invention as defined by the appended claimsand their equivalents.

It is to be understood that the singular forms “a,” “an,” and “the”include plural referents unless the context clearly dictates otherwise.Thus, for example, reference to “a component surface” includes referenceto one or more of such surfaces.

An exemplary embodiment of the present invention provides an apparatus,circuit, and method for controlling a service access in a packet datacommunication system.

An exemplary embodiment of the present invention provides an apparatus,circuit, and method for controlling a service access by considering atleast one of a service type and a service priority in a packet datacommunication system.

An exemplary embodiment of the present invention provides an apparatus,circuit, and method for controlling a service access by considering aservice characteristic in a packet data communication system.

Exemplary embodiments of the present invention are described below withreference to a Long Term Evolution (LTE) mobile communication system.However, it will be understood by those of ordinary skill in the artthat exemplary embodiments of the present invention may be applied toother packet data communication systems such as a Long Term EvolutionAdvanced (LTE-A) mobile communication system, a High Speed Uplink PacketAccess (HSUPA) mobile communication system, and a High Rate Packet Data(HRPD) mobile communication system proposed in a 3rd Generation ProjectPartnership 2 (3GPP2).

Exemplary embodiments of the present invention are described below withreference to a Packet Service (PS) Voice Call (PS Voice Call) access.However, it will be understood by those of ordinary skill in the artthat exemplary embodiments of the present invention may be applied toother service access.

FIG. 1 illustrates a process for controlling a PS Voice Call access inan LTE mobile communication system according to a first exemplaryembodiment of the present invention.

Referring to FIG. 1, an evolved Node B (eNB) 113 generates accessBarring Information (ac-BarringInfo) upon determining that there is aneed for a service access barring by considering system parameters instep 115. The ac-BarringInfo indicates information on a service accesswhich the eNB 113 intends to bar, and includes at least one of an accessBarring For Emergency (ac-BarringForEmergency) parameter indicatingservice access barring for an emergency service, an access Barring ForMobile Originating-Signalling (ac-BarringForMo-Signalling) parameterindicating service access barring for Mobile Originating(MO)-signalling, an access Barring For Mobile Originating-Data(ac-BarringForMo-Data) parameter indicating service access barring foran MO-data, and an access Barring For Circuit Service FallBack(CSFB)-Release 10 (ac-BarringForCSFB-r10) parameter indicating serviceaccess barring for a CSFB-Release 10.

The ac-BarringInfo is processed in a Radio Resource Control (RRC) layer.In FIG. 1, it will be assumed that the ac-BarringInfo includes all ofthe ac-BarringForEmergency parameter, the ac-BarringForMo-Signallingparameter, the ac-BarringForMo-Data parameter, and theac-BarringForCSFB-r10 parameter.

Each of the ac-BarringForEmergency parameter, theac-BarringForMo-Signalling parameter, the ac-BarringForMo-Dataparameter, and the ac-BarringForCSFB-r10 parameter may indicate relatedservice access barring if each of the ac-BarringForEmergency parameter,the ac-BarringForMo-Signalling parameter, the ac-BarringForMo-Dataparameter, and the ac-BarringForCSFB-r10 parameter is included in theac-BarringInfo. On the other hand, each of the ac-BarringForEmergencyparameter, the ac-BarringForMo-Signalling parameter, theac-BarringForMo-Data parameter, and the ac-BarringForCSFB-r10 parametermay indicate the related service access barring according to a parametervalue of each of the ac-BarringForEmergency parameter, theac-BarringForMo-Signalling parameter, the ac-BarringForMo-Dataparameter, and the ac-BarringForCSFB-r10 parameter.

The detailed description of the ac-BarringForEmergency parameter, theac-BarringForMo-Signalling parameter, the ac-BarringForMo-Dataparameter, and the ac-BarringForCSFB-r10 parameter will follow.

In an LTE mobile communication system, the ac-BarringForEmergencyparameter, the ac-BarringForMo-Signalling parameter, theac-BarringForMo-Data parameter, and the ac-BarringForCSFB-r10 parametermay be included in the ac-BarringInfo, and the ac-BarringInfo may betransmitted through a System Information Block (SIB) Type 2 (SIB Type2)message. The ac-BarringForEmergency parameter, theac-BarringForMo-Signalling parameter, and the ac-BarringForMo-Dataparameter have been added in a standard prior to an LTE-A Release 10standard, and the ac-BarringForCSFB-r10 parameter has been added in theLTE-A Release 10 standard.

The ac-BarringForEmergency parameter should always be included in theac-BarringInfo, and indicates whether a related eNB bars a serviceaccess to an emergency call using two values, e.g., “TRUE” and “FALSE”.If the value of the ac-BarringForEmergency parameter is set to “TRUE”,the ac-BarringForEmergency parameter indicates the related eNB bars theservice access to the emergency call. If the value of theac-BarringForEmergency parameter is set to “FALSE”, theac-BarringForEmergency parameter indicates the related eNB does not barthe service access to the emergency call.

Each of the ac-BarringForMO-Signalling parameter, theac-BarringForMO-Data parameter, and the ac-BarringForCSFB-r10 parameterincludes the following parameters.

(1) ac-BarringFactor Parameter

The ac-BarringFactor parameter denotes an access barring ration for arelated service. The ac-BarringFactor parameter may have one valuerepresenting a barring percentage from among 0 to 95. If a value of theac-BarringFactor parameter is 0, the ac-BarringFactor parameterindicates that a service access to a related service is always allowed,i.e., 0% of the related service is barred. If the value of theac-BarringFactor parameter is 95, the ac-BarringFactor parameterindicates that the service access to the related service is barred to95%.

(2) ac-BarringTime Parameter

The ac-BarringTime parameter denotes access barring time for a relatedservice. For example, the ac-BarringTime parameter may indicate onevalue from among 4 to 512 seconds if a service access to the relatedservice is barred. In this case, a User Equipment (UE) does not performa service access to a related cell, i.e., a related servicecorresponding to a value of the ac-BarringTime parameter.

(3) ac-BarringForSpecialAC Parameter

The ac-BarringForSpecialAC parameter denotes service access barring fora specific access. For example, a service access to a related service isbarred if all of information of special AC 11 . . . 15 stored in aUniversal Subscriber Identity Module (USIM) of a UE and a value of anAC-BarringConfig parameter received through the SIB Type2 message areset to “1”.

For example, if a UE receives the ac-BarringForEmergency parameter, theac-BarringForMo-Signalling parameter, the ac-BarringForMo-Data parameterand the ac-BarringForCSFB-r10 parameter through the SIB Type2 messageupon accessing an eNB, it will be assumed that the UE may detect accessbarring for a related service using a value of each of theac-BarringForEmergency parameter, the ac-BarringForMo-Signallingparameter, the ac-BarringForMo-Data parameter and theac-BarringForCSFB-r10 parameter.

The eNB 113 may bar a service access to the eNB 113 of UEs using anaccess Barring For MultiMedia TELephony-Voice-Release 9(ssac-BarringForMMTEL-Voice-r9) parameter indicating a service accessbarring for multimedia telephony-voice-Release 9 and an access BarringFor MultiMedia TELephony-Video-Release 9 (ssac-BarringForMMTEL-Video-r9)parameter indicating a service access barring for multimediatelephony-video-Release 9. The ssac-BarringForMMTEL-Voice-r9 parameterand the ssac-BarringForMMTEL-Video-r9 parameter are processed in anupper layer, not a RRC layer, for example, a User Interface (UI) layer.

Each of the ssac-BarringForMMTEL-Voice-r9 parameter and thessac-BarringForMMTEL-Video-r9 parameter may indicate related serviceaccess barring by transmitting/receiving thessac-BarringForMMTEL-Voice-r9 parameter and thessac-BarringForMMTEL-Video-r9 parameter. On the other hand, a value ofeach of the ssac-BarringForMMTEL-Voice-r9 parameter and thessac-BarringForMMTEL-Video-r9 parameter may indicate the related serviceaccess barring. For example, if each of thessac-BarringForMMTEL-Voice-r9 parameter and thessac-BarringForMMTEL-Video-r9 parameter is implemented by 1 bit, it willbe assumed that each of the ssac-BarringForMMTEL-Voice-r9 parameter andthe ssac-BarringForMMTEL-Video-r9 parameter indicates the relatedservice access barring only if a value of each of thessac-BarringForMMTEL-Voice-r9 parameter and thessac-BarringForMMTEL-Video-r9 parameter is “1”.

In FIG. 1, for convenience, the eNB bars a service access for the eNBusing ac-BarringInfo processed in a RRC layer.

The eNB 113 includes the generated ac-BarringInfo into SystemInformation (SI), and broadcasts a SIB Type2 message including the SIincluding the ac-BarringInfo in order for UEs located in a servicecoverage area of the eNB 113 to receive the SIB Type2 message in step117. In FIG. 1, the UE 111 receives the SIB Type2 message broadcast bythe eNB 113, however, it will be understood by those of ordinary skillin the art that UEs which receive the SIB Type2 message may be all UEslocated in the service coverage of the eNB 113.

The UE 111 receives the SIB Type2 message, detects the ac-BarringInfofrom the SI included in the received SIB Type2 message, and stores thedetected ac-BarringInfo in step 119.

The UE 111 detects that a PS Voice Call has been triggered in step 121.Upon detecting that the PS Voice Call has been triggered, the UE 111determines whether the UE 111 may perform a service access to the eNB113 for the PS Voice Call by checking the ac-BarringInfo in step 123. InFIG. 1, the UE 111 may detect that the service access to the eNB 113 isbarring since the ac-BarringInfo includes the ac-BarringForMo-Dataparameter.

According to detecting the service barring for the PS Voice Call, the UE111 intends to service access the eNB 113 by transmitting a RRCConnection Request message to the eNB 113 after waiting for a presettime in step 125.

FIG. 2 illustrates an operation process of an eNB, such as the eNB 113illustrated in FIG. 1, according to an exemplary embodiment of thepresent invention.

Referring to FIG. 2, the eNB 113 generates ac-BarringInfo upondetermining that there is a need for service access barring byconsidering system parameters in step 211. The ac-BarringInfo isdescribed before with reference to FIG. 1, so a detailed descriptionthereof will be omitted here. The eNB 113 includes the generatedac-BarringInfo into SI, and broadcasts an SIB Type2 message includingthe SI including the ac-BarringInfo in order for UEs (including a UE111) located in a service coverage area of the eNB 113 to receive theSIB Type2 message in step 213. The eNB 113 receives a RRC ConnectionRequest message from the UE 111 in step 215. It is noted that the UE 111transmits the RRC Connection Request message after waiting for a presettime according to the service access barring of the eNB 113.

FIG. 3 illustrates an operation process of a UE, such as the UE 111illustrated in FIG. 1, according to an exemplary embodiment of thepresent invention.

Referring to FIG. 3, the UE 111 receives an SIB Type2 message includingSI including ac-BarringInfo from eNB 113 in step 311. The UE 111 detectsthe ac-BarringInfo from the SI included in the SIB Type2 message andstores the ac-BarringInfo in step 313. The UE 111 detects that a PSVoice Call is triggered in step 315. The UE 111 determines whether theUE 111 may perform a service access to the eNB 113 for the PS Voice Callby checking the stored ac-BarringInfo in step 317. In FIG. 1, it will beassumed that the ac-BarringInfo includes the ac-BarringForMo-Dataparameter, so the UE 111 may detect that the service access to the eNB113 is barring.

The UE 111 transmits a RRC Connection message for the PS Voice Call tothe eNB 113 after waiting for a preset time without transmitting the RRCConnection message for the PS Voice Call due to the service accessbarring in step 319.

As described with regard to FIGS. 1 to 3, in an LTE mobile communicationsystem, a specific eNB may bar a service access to the specific eNBusing an ac-BarringInfo.

Meanwhile, whether a voice call service is possible is very importantfor a user using a UE, so a mobile communication provider gives thehighest service priority to the voice call service by consideringimportance of the voice call service. That is, the user may receive thevoice call service anytime and anywhere.

In an LTE mobile communication system, if an eNB controls to serviceaccess the eNB using ac-BarringInfo including an ac-BarringForMo-Dataparameter, a voice call service becomes a service access barring objectfor the eNB due to the ac-BarringForMo-Data parameter, because the voicecall service is provided as a packet data service, that is, the voicecall service is provided through packet data. For example, in the LTEmobile communication system, if the eNB controls to service access theeNB using a scheme described in FIGS. 1 to 3, a voice call service maynot be provided to a UE during an access barring interval.

Exemplary embodiments of the present invention further provide anapparatus, circuit, and method for controlling a service access using anew parameter, i.e., an Access Enable For PS Voice Call(AccessEnableForPSCall) parameter indicating that a service access to aPS Voice Call is possible in an LTE mobile communication system. TheAccessEnableForPSCall parameter may be included in the ac-BarringInfo.

FIG. 4 schematically illustrates a process for controlling a PS VoiceCall access in an LTE mobile communication system according to a secondexemplary embodiment of the present invention.

Referring to FIG. 4, an eNB 413 generates ac-BarringInfo upondetermining that there is a need for service access barring byconsidering system parameters in step 415. The ac-BarringInfo indicatesinformation on a service access which the eNB 413 intends to bar, andincludes at least one of an ac-BarringForEmergency parameter, anac-BarringForMo-Signalling parameter, an ac-BarringForMo-Data parameter,an ac-BarringForCSFB-r10 parameter, and an AccessEnableForPSCallparameter. The BarringInfo is processed in a RRC layer. In FIG. 4, itwill be assumed that the ac-BarringInfo includes all of theac-BarringForEmergency parameter, the ac-BarringForMo-Signallingparameter, the ac-BarringForMo-Data parameter, the ac-BarringForCSFB-r10parameter, and the AccessEnableForPSCall parameter.

Each of the ac-BarringForEmergency parameter, theac-BarringForMo-Signalling parameter, the ac-BarringForMo-Dataparameter, the ac-BarringForCSFB-r10, and the AccessEnableForPSCallparameter may indicate related service access barring if each of theac-BarringForEmergency parameter, the ac-BarringForMo-Signallingparameter, the ac-BarringForMo-Data parameter, the ac-BarringForCSFB-r10parameter, and the AccessEnableForPSCall parameter is included in theac-BarringInfo. On the other hand, each of the ac-BarringForEmergencyparameter, the ac-BarringForMo-Signalling parameter, theac-BarringForMo-Data parameter, the ac-BarringForCSFB-r10 parameter, andthe AccessEnableForPSCall parameter may indicate the related serviceaccess barring according to a parameter value of each of theac-BarringForEmergency parameter, the ac-BarringForMo-Signallingparameter, the ac-BarringForMo-Data parameter, the ac-BarringForCSFB-r10parameter, and the AccessEnableForPSCall parameter. For example, in acase that each of the ac-BarringForEmergency parameter, theac-BarringForMo-Signalling parameter, the ac-BarringForMo-Dataparameter, the ac-BarringForCSFB-r10 parameter, and theAccessEnableForPSCall parameter is implemented by 1 bit, it will beassumed that a related parameter indicates the service access barringfor the related service only if a parameter value of a related parameteris ‘1’.

The eNB 413 may bar a service access to the eNB of UEs using anssac-BarringForMMTEL-Voice-r9 parameter and anssac-BarringForMMTEL-Video-r9 parameter processed in an upper layer, notthe RRC layer, e.g., a User Interface (UI) layer.

Each of the ssac-BarringForMMTEL-Voice-r9 parameter and thessac-BarringForMMTEL-Video-r9 parameter may indicate related serviceaccess barring if each of the ssac-BarringForMMTEL-Voice-r9 parameterand the ssac-BarringForMMTEL-Video-r9 parameter is included in theac-BarringInfo. On the other hand, each of thessac-BarringForMMTEL-Voice-r9 parameter and thessac-BarringForMMTEL-Video-r9 parameter may indicate the related serviceaccess barring according to a parameter value of each of thessac-BarringForMMTEL-Voice-r9 parameter, and thessac-BarringForMMTEL-Video-r9 parameter. For example, in a case thateach of the ssac-BarringForMMTEL-Voice-r9 parameter and thessac-BarringForMMTEL-Video-r9 parameter is implemented by 1 bit, it willbe assumed that a related parameter indicates service access barring fora related service only if a parameter value of the related parameter is‘1’.

In FIG. 4, for convenience, the eNB bars a service access for the eNBusing ac-BarringInfo processed in a RRC layer.

The eNB 413 includes the generated ac-BarringInfo into SI, andbroadcasts an SIB Type2 message including the SI including theac-BarringInfo in order for UEs located in a service coverage area ofthe eNB 413 to receive the SIB Type2 message in step 417. In FIG. 4, theUE 411 receives the SIB Type2 message broadcast by the eNB 413. However,it will be understood by those of ordinary skill in the art that UEswhich receive the SIB Type2 message may be all UEs located in theservice coverage area of the eNB 413.

The UE 411 receives the SIB Type2 message, detects the ac-BarringInfofrom the SI included in the received SIB Type2 message, and stores thedetected ac-BarringInfo in step 419.

The UE 411 detects that a PS Voice Call is triggered in step 421. Upondetecting that the PS Voice Call is triggered, the UE 411 determineswhether the UE 411 may perform a service access to the eNB 413 for thePS Voice Call by checking the ac-BarringInfo in step 423. In FIG. 4, theUE 411 may detect that a service access to the PS Voice Call is possibleeven though a service access to the eNB 413 is barring since theac-BarringInfo includes the ac-BarringForMo-Data parameter and theAccessEnableForPSCall parameter.

According to detecting that the service access to the PS Voice Call ispossible, the UE 411 intends to service access the eNB 413 bytransmitting a RRC Connection Request message to the eNB 413 in step425.

FIG. 5 illustrates an operation process of an eNB, such as the eNB 413illustrated in FIG. 4, according to an exemplary embodiment of thepresent invention.

Referring to FIG. 5, the eNB 413 generates ac-BarringInfo upondetermining that there is a need for service access barring byconsidering system parameters in step 511. The ac-BarringInfo isdescribed before with reference to FIG. 4, so a detailed descriptionthereof will be omitted here. The eNB 413 includes the generatedac-BarringInfo into SI, and broadcasts an SIB Type2 message includingthe SI including the ac-BarringInfo, specially an AccessEnableForPSCallparameter in order for UEs (including a UE 411) located in a servicecoverage of the eNB 413 to receive the SIB Type2 message in step 513.The eNB 413 receives a RRC Connection Request message from the UE 411 instep 515. It is noted that the UE 411 immediately transmits the RRCConnection Request message to the eNB 413 without service access barringby detecting the AccessEnableForPSCall parameter.

FIG. 6 illustrates an operation process of a UE, such as the UE 411illustrated in FIG. 4, according to an exemplary embodiment of thepresent invention.

Referring to FIG. 6, the UE 411 receives an SIB Type2 message includingSI including ac-BarringInfo including an AccessEnableForPSCall parameterfrom eNB 413 in step 611. The UE 411 detects the ac-BarringInfoincluding the AccessEnableForPSCall parameter from the SI included inthe SIB Type2 message and stores the ac-BarringInfo in step 613. The UE411 detects that a PS Voice Call is triggered in step 615. The UE 411determines whether the UE 411 may perform a service access to the eNB113 for the PS Voice Call by checking the stored ac-BarringInfo in step617. In FIG. 4, it will be assumed that the ac-BarringInfo includes theac-BarringForMo-Data parameter and the AccessEnableForPSCall parameter,so the UE 411 may detect that the service access to the eNB 413 ispossible. So, the UE 411 transmits a RRC Connection message for the PSVoice Call to the eNB 413 since the service access to the eNB 413 ispossible in step 619.

As described with regard to FIGS. 4 to 6, in an LTE mobile communicationsystem, an eNB may provide a voice call service by including theAccessEnableForPSCall parameter into the ac-BarringInfo.

Referring to FIGS. 4 to 6, a service type of a service which is alwayspossible to service access in a case that a service access to a specificeNB is barred in an LTE mobile communication system is a voice callservice. However, it will be understood by those of ordinary skill inthe art that a service access control process described in FIGS. 4 to 6may be applied to other service different from the voice call service.

Further, it will be understood by those of ordinary skill in the artthat the service type of the service which is always possible to serviceaccess in the case that the service access to the specific eNB is barredin the LTE mobile communication system may not be limited, and may, forexample, be one of a real-time service such as the voice call service, aservice that a UE will always want to receive, a service which is set toalways serve in the LTE mobile communication system, a service which isprovided to a UE which uses the highest billing rate, etc. That is, theservice type of the service which is always possible to service accessin the case that the service access to the specific eNB is barred in theLTE mobile communication system may be determined by considering aservice type, a service priority, etc.

In FIGS. 4 to 6, a service access to a specific eNB is controlled byfacilitating a service access to a voice call service in the case thatthe service access to the specific eNB is barred in the LTE mobilecommunication system. However, it will be understood by those ofordinary skill in the art that a service access may be controlled per aservice, and a service characteristic without limiting a service accessbased on whether a service is the voice call service.

The detailed description of a method for controlling a service accessusing a service characteristic will follow.

Each of services has a related service characteristic. For example, therelated service characteristic may include data transmission capacity,response/delay speed, data reliability, and a real-time communicationcharacteristic such as a voice, a video conference, and a video call.So, an eNB may control a service access based on the servicecharacteristic. That is, the eNB may control a service access accordingto a service characteristic of a related service regardless of a type ofa service which a UE wants to receive.

For example, an eNB always allows a service access if a servicecharacteristic has a real-time communication characteristic regardlessof a service type. On the other hand, the eNB bars the service access ifthe service characteristic does not have the real-time communicationcharacteristic regardless of the service type. The eNB always allows theservice access if the service characteristic indicates a response/delayspeed is less than a preset threshold response/delay speed regardless ofthe service type. On the other hand, the eNB bars the service access ifthe service characteristic does not indicate the response/delay speed isequal to or greater than the threshold response/delay speed regardlessof the service type. Further, the eNB always allows the service accessif a data transmitting capacity is less than a preset threshold datatransmitting capacity regardless of the service type. On the other hand,the eNB bars the service access if the data transmitting capacity isequal to or greater than the threshold data transmitting capacityregardless of the service type.

That is, the eNB may bar or allow a service access on a basis of aservice characteristic including data transmission capacity,response/delay speed, data reliability, and a real-time communicationcharacteristic such as a voice, a video conference, and a video call.

In FIGS. 4 to 6, in an LTE mobile communication system, a specific eNBallows a service access to a voice call service even though a serviceaccess to the specific eNB is barring. However, it will be understood bythose of ordinary skill in the art that exemplary embodiments of thepresent invention may bar a service access by including a voice callservice, i.e., a PS Voice Call into Mobile Originating (MO) data.

Exemplary embodiments of the present invention further provide anapparatus, circuit, and method for controlling a service access using anAccessEnableGroup parameter indicating an Access Enable Group(AccessEnableGroup) as a group of UEs which may service access under aservice access barring situation in an LTE mobile communication system.The AccessEnableGroup parameter includes IDentifiers (IDs) of UEsincluded in an AccessEnableGroup. The AccessEnableGroup parameter may beincluded in the ac-BarringInfo.

FIG. 7 illustrates a process for controlling a PS Voice Call access inan LTE mobile communication system according to a third exemplaryembodiment of the present invention.

Referring to FIG. 7, an eNB 713 generates ac-BarringInfo upondetermining that there is a need for service access barring byconsidering system parameters in step 715. The ac-BarringInfo indicatesinformation on a service access which the eNB 713 intends to bar, andincludes at least one of an ac-BarringForEmergency parameter, anac-BarringForMo-Signalling parameter, an ac-BarringForMo-Data parameter,an ac-BarringForCSFB-r10 parameter, and an Access Enable Groupparameter. The ac-BarringInfo is processed in a RRC layer. In FIG. 7, itwill be assumed that the ac-BarringInfo includes all of theac-BarringForEmergency parameter, the ac-BarringForMo-Signallingparameter, the ac-BarringForMo-Data parameter, the ac-BarringForCSFB-r10parameter, and the Access Enable Group parameter. In FIG. 7, it will befurther assumed that the Access Enable Group parameter includes an ID ofthe UE 711.

Each of the ac-BarringForEmergency parameter, theac-BarringForMo-Signalling parameter, the ac-BarringForMo-Dataparameter, and the ac-BarringForCSFB-r10 may indicate related serviceaccess barring if each of the ac-BarringForEmergency parameter, theac-BarringForMo-Signalling parameter, the ac-BarringForMo-Dataparameter, and the ac-BarringForCSFB-r10 parameter is included in theac-BarringInfo. On the other hand, each of the ac-BarringForEmergencyparameter, the ac-BarringForMo-Signalling parameter, theac-BarringForMo-Data parameter, and the ac-BarringForCSFB-r10 parametermay indicate the related service access barring according to a parametervalue of each of the ac-BarringForEmergency parameter, theac-BarringForMo-Signalling parameter, the ac-BarringForMo-Dataparameter, and the ac-BarringForCSFB-r10 parameter. For example, in acase that each of the ac-BarringForEmergency parameter, theac-BarringForMo-Signalling parameter, the ac-BarringForMo-Dataparameter, and the ac-BarringForCSFB-r10 parameter is implemented by 1bit, it will be assumed that a related parameter indicates the serviceaccess barring for the related service only if a parameter value of therelated parameter is ‘1’.

The eNB 713 may bar a service access to the eNB of UEs using anssac-BarringForMMTEL-Voice-r9 parameter and anssac-BarringForMMTEL-Video-r9 parameter processed in an upper layer notthe RRC layer, e.g., a UI layer.

Each of the ssac-BarringForMMTEL-Voice-r9 parameter, and thessac-BarringForMMTEL-Video-r9 parameter may indicate related serviceaccess barring if each of the ssac-BarringForMMTEL-Voice-r9 parameter,and the ssac-BarringForMMTEL-Video-r9 parameter is included in theac-BarringInfo. On the other hand, each of thessac-BarringForMMTEL-Voice-r9 parameter, and thessac-BarringForMMTEL-Video-r9 parameter may indicate the related serviceaccess barring according to a parameter value of each of thessac-BarringForMMTEL-Voice-r9 parameter, and thessac-BarringForMMTEL-Video-r9 parameter. For example, in a case thateach of the ssac-BarringForMMTEL-Voice-r9 parameter, and thessac-BarringForMMTEL-Video-r9 parameter is implemented by 1 bit, it willbe assumed that a related parameter indicates the service access barringfor the related service only if a parameter value of the relatedparameter is ‘1’.

In FIG. 7, for convenience, the eNB bars a service access for the eNBusing ac-BarringInfo processed in a RRC layer.

The eNB 713 includes the generated ac-BarringInfo into SI, andbroadcasts an SIB Type2 message including the SI including theac-BarringInfo in order for UEs located in a service coverage area ofthe eNB 713 to receive the SIB Type2 message in step 717. In FIG. 7, theUE 711 receives the SIB Type2 message broadcasted by the eNB 713,however, it will be understood by those of ordinary skill in the artthat UEs which receive the SIB Type2 message may be all UEs located inthe service coverage area of the eNB 713.

The UE 711 receives the SIB Type2 message, detects the ac-BarringInfofrom the SI included in the received SIB Type2 message, and stores thedetected ac-BarringInfo in step 719.

The UE 711 detects that a PS Voice Call is triggered in step 721. Upondetecting that the PS Voice Call is triggered, the UE 711 determineswhether the UE 711 may perform a service access to the eNB 713 for thePS Voice Call by checking the ac-BarringInfo in step 723. In FIG. 7, theUE 711 may detect that a service access to the eNB 713 is possible eventhough a service access to the eNB 713 is barring since theac-BarringInfo includes the ac-BarringForMo-Data parameter and theAccess Enable Group parameter, and the Access Enable Group parameterincludes the ID of the UE 711.

According to detecting that the service access to the PS Voice Call ispossible, the UE 711 intends to service access the eNB 713 bytransmitting a RRC Connection Request message to the eNB 713 in step725.

FIG. 8 illustrates an operation process of an eNB, such as the eNB 713illustrated in FIG. 7, according to an exemplary embodiment of thepresent invention.

Referring to FIG. 8, the eNB 713 generates ac-BarringInfo upondetermining that there is a need for service access barring byconsidering system parameters in step 811. The ac-BarringInfo isdescribed before with reference to FIG. 7, so a detailed descriptionthereof will be omitted here. The eNB 713 includes the generatedac-BarringInfo into SI, and broadcasts an SIB Type2 message includingthe SI including the ac-BarringInfo, specially an Access Enable Groupparameter in order for UEs (including a UE 711) located in a servicecoverage of the eNB 713 to receive the SIB Type2 message in step 813.The eNB 713 receives a RRC Connection Request message from the UE 711 instep 815. It is noted that the UE 711 immediately transmits the RRCConnection Request message to the eNB 713 without service access barringby detecting the Access Enable Group parameter.

FIG. 9 illustrates an operation process of a UE, such as the UE 711illustrated in FIG. 7, according to an exemplary embodiment of thepresent invention.

Referring to FIG. 9, the UE 711 receives an SIB Type2 message includingSI including ac-BarringInfo including an Access Enable Group parameterfrom eNB 713 in step 911. The UE 711 detects the ac-BarringInfoincluding the Access Enable Group parameter from the SI included in theSIB Type2 message and stores the ac-BarringInfo in step 913. The UE 711detects that a PS Voice Call is triggered in step 915. The UE 711determines whether the UE 711 may perform a service access to the eNB713 for the PS Voice Call by checking the stored ac-BarringInfo in step917. In FIG. 7, the ac-BarringInfo includes the ac-BarringForMo-Dataparameter and the Access Enable Group parameter, so the UE 711 maydetect that the service access to the eNB 713 is possible.

The UE 711 transmits a RRC Connection message for the PS Voice Call tothe eNB 713 since the service access to the eNB 713 is possible in step919.

As described with regard to FIGS. 7 to 9, in an LTE mobile communicationsystem, an eNB may provide a voice call service by including the AccessEnable Group parameter into the ac-BarringInfo anytime and anywhere.

In FIGS. 7 to 9, a service type of a service which is always possible toservice access in a case that a service access to a specific eNB isbarred in an LTE mobile communication system is a voice call service.However, it will be understood by those of ordinary skill in the artthat a service access control process described in FIGS. 7 to 9 may beapplied to other service different from the voice call service. Thedetailed description of the service type of the service which is alwayspossible to service access in the case that the service access to thespecific eNB is barred in the LTE mobile communication system will beomitted.

Unlike FIGS. 7 to 9, exemplary embodiments of the present inventionfurther propose an apparatus, circuit, and method for controlling aservice access using a Service Access Enable (ServiceAccessEnable)parameter indicating that a service which is always possible to serviceaccess in a case that a service access to a specific eNB is barred in anLTE mobile communication system.

In FIGS. 7 to 9, a service access to a specific eNB is controlled byfacilitating a service access to a voice call service in the case thatthe service access to the specific eNB is barred in the LTE mobilecommunication system. However, it will be understood by those ofordinary skill in the art that a service access may be controlled per aservice, and a service characteristic without limiting a service accessbased on whether a service is the voice call service.

The description of a method for controlling a service access using aservice characteristic will follow.

Each of services has a service characteristic, and the servicecharacteristic may include data transmitting capacity, response/delayspeed, data reliability, and a real-time communication characteristicsuch as a voice, a video conference, and a video call. So, an eNB maycontrol a service access based on the service characteristic. That is,the eNB may control a service access according to a servicecharacteristic of a related service regardless of a service type of therelated service which a UE intends to receive.

For example, an eNB always allows a service access if a servicecharacteristic has a real-time communication characteristic regardlessof a service type. On the other hand, the eNB bars the service access ifthe service characteristic does not have the real-time communicationcharacteristic regardless of the service type. The eNB always allows theservice access if the service characteristic indicates a response/delayspeed is less than a preset threshold response/delay speed regardless ofthe service type. On the other hand, the eNB bars the service access ifthe service characteristic does not indicate the response/delay speed isequal to or greater than the threshold response/delay speed regardlessof the service type. Further, the eNB always allows the service accessif a data transmitting capacity is less than a preset threshold datatransmitting capacity regardless of the service type. On the other hand,the eNB bars the service access if the data transmitting capacity isequal to or greater than the threshold data transmitting capacityregardless of the service type.

That is, the eNB may bar or allow a service access on a basis of aservice characteristic including data transmission capacity,response/delay speed, data reliability, and a real-time communicationcharacteristic such as a voice, a video conference, and a video call.

In FIGS. 7 to 9, a service access to a specific eNB is controlled byfacilitating a service access to a voice call service in the case thatthe service access to the specific eNB is barred in the LTE mobilecommunication system. However, it will be understood by those ofordinary skill in the art that a service access may be barred byincluding a voice call service, i.e., a PS Voice Call into an MO data.

FIG. 10 illustrates a process for controlling a PS Voice Call access inan LTE mobile communication system according to a fourth exemplaryembodiment of the present invention.

Referring to FIG. 10, an eNB 1013 generates ac-BarringInfo upondetermining that there is a need for service access barring byconsidering system parameters in step 1015. The ac-BarringInfo indicatesinformation on a service access which the eNB 1013 intends to bar, andincludes at least one of an ac-BarringForEmergency parameter, anac-BarringForMo-Signalling parameter, an ac-BarringForMo-Data parameter,and an ac-BarringForCSFB-r10 parameter. The ac-BarringInfo is processedin a RRC layer. In FIG. 10, it will be assumed that the ac-BarringInfoincludes all of the ac-BarringForEmergency parameter, theac-BarringForMo-Signalling parameter, the ac-BarringForMo-Dataparameter, and the ac-BarringForCSFB-r10 parameter.

Each of the ac-BarringForEmergency parameter, theac-BarringForMo-Signalling parameter, the ac-BarringForMo-Dataparameter, and the ac-BarringForCSFB-r10 may indicate related serviceaccess barring if each of the ac-BarringForEmergency parameter, theac-BarringForMo-Signalling parameter, the ac-BarringForMo-Dataparameter, and the ac-BarringForCSFB-r10 parameter is included in theac-BarringInfo. On the other hand, each of the ac-BarringForEmergencyparameter, the ac-BarringForMo-Signalling parameter, theac-BarringForMo-Data parameter, and the ac-BarringForCSFB-r10 parametermay indicate the related service access barring according to a parametervalue of each of the ac-BarringForEmergency parameter, theac-BarringForMo-Signalling parameter, the ac-BarringForMo-Dataparameter, and the ac-BarringForCSFB-r10 parameter. For example, in acase that each of the ac-BarringForEmergency parameter, theac-BarringForMo-Signalling parameter, the ac-BarringForMo-Dataparameter, and the ac-BarringForCSFB-r10 parameter is implemented by 1bit, it will be assumed that a related parameter indicates the serviceaccess barring for the related service only if a parameter value of therelated parameter is ‘1’.

The eNB 1013 may bar a service access to the eNB of UEs using anssac-BarringForMMTEL-Voice-r9 parameter and anssac-BarringForMMTEL-Video-r9 parameter processed in an upper layer notthe RRC layer, e.g., a UI layer.

Each of the ssac-BarringForMMTEL-Voice-r9 parameter, and thessac-BarringForMMTEL-Video-r9 parameter may indicate related serviceaccess barring if each of the ssac-BarringForMMTEL-Voice-r9 parameter,and the ssac-BarringForMMTEL-Video-r9 parameter is included in theac-BarringInfo. On the other hand, each of thessac-BarringForMMTEL-Voice-r9 parameter, and thessac-BarringForMMTEL-Video-r9 parameter may indicate the related serviceaccess barring according to a parameter value of each of thessac-BarringForMMTEL-Voice-r9 parameter, and thessac-BarringForMMTEL-Video-r9 parameter. For example, in a case thateach of the ssac-BarringForMMTEL-Voice-r9 parameter, and thessac-BarringForMMTEL-Video-r9 parameter is implemented by 1 bit, it willbe assumed that a related parameter indicates the service access barringfor the related service only if a parameter value of the relatedparameter is ‘1’.

In FIG. 10, for convenience, the eNB bars a service access for the eNBusing ac-BarringInfo processed in a RRC layer.

The eNB 1013 includes the generated ac-BarringInfo into SI, andbroadcasts an SIB Type2 message including the SI including theac-BarringInfo in order for UEs located in a service coverage area ofthe eNB 1013 to receive the SIB Type2 message in step 1017. In FIG. 10,the UE 1011 receives the SIB Type2 message broadcast by the eNB 1013,however, it will be understood by those of ordinary skill in the artthat UEs which receive the SIB Type2 message may be all UEs located inthe service coverage area of the eNB 1013.

The UE 1011 receives the SIB Type2 message, detects the ac-BarringInfofrom the SI included in the received SIB Type2 message, and stores thedetected ac-BarringInfo in step 1019.

The UE 1011 detects that a PS Voice Call is triggered in step 1021. Upondetecting that the PS Voice Call is triggered, the UE 1011 determineswhether the UE 1011 may perform a service access to the eNB 1013 for thePS Voice Call by checking the ac-BarringInfo in step 1023. In FIG. 10,the UE 1011 may detect that a service access to the eNB 1013 is possiblesince the ac-BarringInfo includes the ac-BarringForMo-Data parameter. Onthe other hand, the UE 1011 intends to service access the eNB 1013 bytransmitting a RRC Connection Request message including aServiceAccessEnable parameter to the eNB 1013 since the UE 1011 decidesthat the PS Voice Call should be served even though a service access isbarring in step 1025. A value of the ServiceAccessEnable parameter isset to a value indicating the PS Voice Call.

The eNB 1013 receives the RRC Connection Request message, and detectsthat the UE 1011 has intended to service access the eNB 1013 accordingto the PS Voice Call triggering by detecting the ServiceAccessEnableparameter form the RRC Connection Request message.

FIG. 11 illustrates an operation process of an eNB, such as the eNB 1013illustrated in FIG. 10, according to an exemplary embodiment of thepresent invention.

Referring to FIG. 11, the eNB 1013 generates ac-BarringInfo upondetermining that there is a need for a service access barring byconsidering system parameters in step 1111. The ac-BarringInfo isdescribed before with reference to FIG. 10, so a detailed descriptionthereof will be omitted here. The eNB 1013 includes the generatedac-BarringInfo into SI, and broadcasts an SIB Type2 message includingthe SI including the ac-BarringInfo in order for UEs (including a UE1011) located in a service coverage area of the eNB 1013 to receive theSIB Type2 message in step 1113. The eNB 713 receives a RRC ConnectionRequest message including a ServiceAccessEnable parameter from the UE1011 in step 1115. It is noted that the UE 1011 immediately transmitsthe RRC Connection Request message to the eNB 1013 without a serviceaccess barring according to a PS Voice Call triggering after determiningthat a PS Voice Call should be served in spite of service access barringof the eNB 1013.

FIG. 12 illustrates an operation process of a UE, such as the UE 1011illustrated in FIG. 10, according to an exemplary embodiment of thepresent invention.

Referring to FIG. 12, the UE 1011 receives an SIB Type2 messageincluding SI including ac-BarringInfo including an Access Enable Groupparameter from eNB 1013 in step 1211. The UE 1011 detects theac-BarringInfo from the SI included in the SIB Type2 message and storesthe ac-BarringInfo in step 1213. The UE 1011 detects that a PS VoiceCall is triggered in step 1215. The UE 1011 determines whether the UE1011 may perform a service access to the eNB 1013 for the PS Voice Callby checking the stored ac-BarringInfo in step 1217. In FIG. 10, the UE1011 may detect that the service access to the eNB 1013 is barring andthere is no service access barring for the PS Voice Call since theac-BarringInfo includes the ac-BarringForMo-Data parameter.

The UE 1011 transmits a RRC Connection message including aServiceAccessEnable parameter for the PS Voice Call to the eNB 1013since there is no service access barring for the PS Voice Call in step1219.

As described with regard to FIGS. 10 to 12, in an LTE mobilecommunication system, a vice call service may be always provided anytimeanywhere by including a ServiceAccessEnable parameter into a RRCConnection Request message.

In FIGS. 10 to 12, a service type of a service which is always possibleto service access in a case that a service access to a specific eNB isbarred in an LTE mobile communication system is a voice call service.However, it will be understood by those of ordinary skill in the artthat a service access control process described in FIGS. 10 to 12 may beapplied to other service different from the voice call service. Thedetailed description of the service type of the service which is alwayspossible to service access in the case that the service access to thespecific eNB is barred in the LTE mobile communication system will beomitted.

In FIGS. 10 to 12, a service access to a specific eNB is controlled byfacilitating a service access to a voice call service in the case thatthe service access to the specific eNB is barred in the LTE mobilecommunication system. However, it will be understood by those ofordinary skill in the art that a service access may be controlled per aservice, and a service characteristic without limiting a service accessbased on whether a service is the voice call service.

The description of a method for controlling a service access using aservice characteristic will follow.

Each of services has a service characteristic, and the servicecharacteristic may include data transmitting capacity, response/delayspeed, data reliability, and a real-time communication characteristicsuch as a voice, a video conference, and a video call. So, an eNB maycontrol a service access based on the service characteristic. That is,the eNB may control a service access according to a servicecharacteristic of a related service regardless of a service type of therelated service which a UE intends to receive.

For example, an eNB always allows a service access if a servicecharacteristic has a real-time communication characteristic regardlessof a service type. On the other hand, the eNB bars the service access ifthe service characteristic does not have the real-time communicationcharacteristic regardless of the service type. The eNB always allows theservice access if the service characteristic indicates a response/delayspeed is less than a preset threshold response/delay speed regardless ofthe service type. On the other hand, the eNB bars the service access ifthe service characteristic does not indicate the response/delay speed isequal to or greater than the threshold response/delay speed regardlessof the service type. Further, the eNB always allows the service accessif a data transmitting capacity is less than a preset threshold datatransmitting capacity regardless of the service type. On the other hand,the eNB bars the service access if the data transmitting capacity isequal to or greater than the threshold data transmitting capacityregardless of the service type.

That is, the eNB may bar or allow a service access on a basis of aservice characteristic including data transmission capacity,response/delay speed, data reliability, and a real-time communicationcharacteristic such as a voice, a video conference, and a video call.

In FIGS. 10 to 12, a service access to a specific eNB is controlled byfacilitating a service access to a voice call service in the case thatthe service access to the specific eNB is barred in the LTE mobilecommunication system. However, it will be understood by those ofordinary skill in the art that a service access may be barred byincluding a voice call service, i.e., a PS Voice Call into an MO data.

FIG. 13 illustrates an internal structure of a UE in an LTEcommunication system according to an exemplary embodiment of the presentinvention.

Referring to FIG. 13, a UE 1300 includes a receiver 1311, a controller1313, a transmitter 1315, and a storage unit 1317.

The controller 1313 controls the overall operation of the UE 1300. Inparticular, the controller 1313 controls the UE 1300 to perform anoperation of service accessing an eNB according to the first exemplaryembodiment to the fourth exemplary embodiment of the present invention.The service access operation is performed in the manner described beforewith reference to FIGS. 1 to 12, so a detailed description thereof willbe omitted here.

The receiver 1311 receives signals from an eNB, etc. under the controlof the controller 1313. The signals received in the receiver 1311 aredescribed before with reference to FIGS. 1 to 12, so a detaileddescription thereof will be omitted here.

The transmitter 1315 transmits signals to the eNB, etc. under thecontrol of the controller 1313. The signals transmitted in thetransmitter 1315 are described before with reference to FIGS. 1 to 12,so a detailed description thereof will be omitted here.

The storage unit 1317 stores the signals received by the receiver 1311and data for the operation of the UE 1300, e.g., information related tothe service access operation.

While the receiver 1311, the controller 1313, the transmitter 1315, andthe storage unit 1317 are shown in FIG. 13 as separate units, it is tobe understood that this is for merely convenience of description. Inother words, two or more of the receiver 1311, the controller 1313, thetransmitter 1315, and the storage unit 1317 may be incorporated into asingle unit.

FIG. 14 illustrates an internal structure of an eNB in an LTEcommunication system according to an exemplary embodiment of the presentinvention.

Referring to FIG. 14, an eNB 1400 includes a receiver 1411, a controller1413, a transmitter 1415, and a storage unit 1417.

The controller 1413 controls the overall operation of the eNB 1400. Inparticular, the controller 1413 controls the eNB 1400 to perform anoperation related to a service access operation in a UE according to thefirst exemplary embodiment to the fourth exemplary embodiment of thepresent invention. The operation related to the service access operationin the UE is performed in the manner described before with reference toFIGS. 1 to 12, so a detailed description thereof will be omitted here.

The receiver 1411 receives signals from the UE, etc. under a control ofthe controller 1413. The signals received in the receiver 1411 aredescribed before with reference to FIGS. 1 to 12, so a detaileddescription thereof will be omitted here.

The transmitter 1415 transmits signals to the UE, etc. under a controlof the controller 1413. The signals transmitted in the transmitter 1415are described before with reference to FIGS. 1 to 12, so a detaileddescription thereof will be omitted here.

The storage unit 1417 stores the signals received by the receiver 1411and data for an operation of the eNB 1400, e.g., information related tothe service access operation in the UE.

While the receiver 1411, the controller 1413, the transmitter 1415, andthe storage unit 1417 are shown in FIG. 14 as separate units, it is tobe understood that this is for merely convenience of description. Inother words, two or more of the receiver 1411, the controller 1413, thetransmitter 1415, and the storage unit 1417 may be incorporated into asingle unit.

As is apparent from the foregoing description, exemplary embodiments ofthe present invention enable to control a service access by consideringat least one of a service type and a service priority in a packet datacommunication system.

Exemplary embodiments of the present invention enable control of aservice access by considering a service characteristic in a packet datacommunication system.

Exemplary embodiments of the present invention enable a seamless serviceaccess by considering a characteristic of a service provided to a UE ina case that an eNB bars a service in a packet data communication system.

Exemplary embodiments of the present invention enhance a service qualityof a service provided in a packet data communication system byfacilitating a seamless service access in the packet data communicationsystem.

Exemplary embodiments of the present invention enhance performance of aservice access control function provided in a packet data communicationsystem by facilitating that a service access control is performed byconsidering a service characteristic.

While the invention has been shown and described with reference tocertain exemplary embodiments thereof, it will be understood by thoseskilled in the art that various changes in form and details may be madetherein without departing from the spirit and scope of the invention asdefined by the appended claims and their equivalents.

What is claimed is:
 1. A method of a user equipment (UE) in a wirelesscommunication system, the method comprising: receiving, from a basestation (BS), a system information (SI) including first informationindicating one or more access control parameters, and the firstinformation including second information indicating access control timeassociated with a service type, and third information indicating whetherthe UE is allowed for a specific service based on the first information;performing, by the UE, an access barring check for the service typebased on the parameters included in the first information correspondingto the service type during a time period indicated by the secondinformation; and determining whether the UE is configured for thespecific service based on the third information in case that the UE isconfigured for the specific service included in a universal subscriberidentity module (USIM), wherein the one or more access controlparameters indicates one or more service types of which accesses arebarred, and the first information is used for identifying whether to barthe accesses of the one or more service types, wherein the secondinformation indicates barring time for a service type of which an accessis barred based on the first information, and wherein the thirdinformation indicates a barring for the specific service of which anaccess is barred.
 2. The method of claim 1, wherein whether the accessof the specific service is barred, is identified based on 1 bitinformation included in the third information.
 3. The method of claim 1,wherein the service type indicated by the first information includes atleast one of a packet service based voice call, a packet service basedvideo call, a mobile originating signalling, and a mobile originatingdata.
 4. A user equipment (UE) in a wireless communication system, theUE comprising: a transceiver connected to a controller; and thecontroller configured to: control the transceiver to receive, from abase station (BS), a system information (SI) including first informationindicating one or more access control parameters, and the firstinformation including second information indicating access control timeassociated with a service type, and third information indicating whetherthe UE is allowed for a specific service based on the first information,perform access barring check for a service type based on parametersincluded in the first information corresponding to the service typeduring a time period indicated by the second information, anddetermining whether the UE is configured for the specific service basedon the third information in case that the UE is configured for thespecific service included in a universal subscriber identity module(USIM), wherein the one or more access control parameters indicates oneor more service types of which accesses are barred, and the firstinformation is used for identifying whether to bar the accesses of theone or more service types, wherein the second information indicatesbarring time for a service type of which an access is barred based onthe first information, and wherein the third information indicates abarring for the specific services of which an access is barred.
 5. TheUE of claim 4, wherein whether the access of the specific service isbarred, is identified based on 1 bit information included in the thirdinformation.
 6. The UE of claim 4, wherein the service type indicated bythe first information includes at least one of a packet service basedvoice call, a packet service based video call, a mobile originatingsignalling and a mobile originating data.
 7. A base station (BS) in awireless communication system, the BS comprising: a transceiverconnected to a controller; and the controller configured to: control thetransceiver to broadcast a system information (SI) including firstinformation indicating one or more access control parameters, and thefirst information including second information indicating access controltime associated with a service type, and third information indicatingwhether the UE is allowed for a specific service based on the firstinformation, perform an access control for barring or allowing an accessfor the service type based on the parameters included in the firstinformation corresponding to the service type during a time periodindicated by the second information, and perform the access control ofthe specific service based on the third information, to a user equipment(UE) in case that the UE is configured for the specific service with auniversal subscriber identity module (USIM), wherein the one or moreaccess control parameters indicates one or more service access types forwhich the access are barred, and the first information is used foridentifying whether to bar accesses of the one or more service types,wherein the second information indicates barring time for a serviceaccess type of which an access is barred based on the first information,and wherein the third information indicates a barring for the specificservice of which an access is barred.
 8. The BS of claim 7, wherein theservice type indicated by the first information includes at least one ofa packet service based voice call, a packet service based video call, amobile originating signalling, and a mobile originating data.
 9. Themethod of claim 1, wherein the specific service includes an emergencyservice.
 10. The UE of claim 4, wherein the specific service includes anemergency service.
 11. A method of a base station (BS) in a wirelesscommunication system, the method comprising: broadcasting, by the BS, asystem information (SI) including first information indicating one ormore access control parameters, and the first information includingsecond information indicating access control time associated with aservice type, and third information indicating whether the UE is allowedfor access control associated with a specific service based on the firstinformation; performing an access control for barring or allowing anaccess for the service type based on the parameters included in thefirst information corresponding to the service type during a time periodindicated by the second information; and performing the access controlof the specific service based on the third information, to a userequipment (UE) in case that the UE is configured for the specificservice with a universal subscriber identity module (USIM), wherein theone or more access control parameters indicates one or more servicetypes of which accesses are barred, and the first information is usedfor identifying whether to bar accesses of the one or more servicetypes, wherein the second information indicates barring time for aservice type of which an access is barred based on the firstinformation, and wherein the third information indicates a barring forthe specific service of which an access is barred.
 12. The method ofclaim 11, wherein the service type indicated by the first informationincludes at least one of a packet service based voice call, a packetservice based video call, a mobile originating signalling and a mobileoriginating data.
 13. The method of claim 1, wherein the service type isdesignated by the BS for each UE.
 14. The UE of claim 4, wherein theservice type is designated by the BS for each UE.
 15. The BS of claim 7,wherein the BS designate the service type for each UE.
 16. The method ofclaim 11, wherein the processor further configured to designate theservice type for each UE.